I think you will really like it. The mini-pontoon boats are very stable. We have a Paddle King 4 person paddle boat (the company also makes fishing boats like yours) and are very happy with it.
http://www.paddleking.com/One thing I will say, the comfort of sitting on a nice, flat, stable platform comes at a price of it catching a lot of wind on a windy day. I finally put permanent mooring lines around my pond so on windy days we can still use it. Tried anchors but the moorings work so much better. Otherwise the pontoon boats sit so high in the water that the wind really blows them around making them hard to handle on a windy day.
I put mine in the pond around mid March and pull it out the first of December. The rest of the time it stays tied to the dock when not in use.
